TWI837983B - Fire accidence protection method used for parking lot and fire accidence propagating prevention system - Google Patents

Abstract

A fire accidence protection method used for the parking lot and a fire accidence propagating prevention system are provided. In the method, sensing data is obtained. The sensing data is generated by detecting parking lots. The sensing data is determined to be matched with a protection condition. The protection condition is related to a fire event. A car is lifted to a quarantine area according to the determined result of matching the protection condition. The fire extinguishing operation is performed in the quarantine area. Thus, a complete solution to resolve fire accident protection and disaster prevention for the parking lot area inside of most buildings is provided. The solution may effectively restrain the disaster, further prevent the spread or thermal propagation of the disaster and greatly reduce the risk of financial damage.

Description

Fire accident prevention method and fire spread prevention system for parking lot

The present invention relates to a method for detecting, preventing or suppressing fire, and in particular to a method for preventing fire accidents and a fire spread prevention system for parking lots.

In order to effectively utilize space, parking lots in metropolitan areas usually have mechanical parking facilities. It is worth noting that there have been cases of vehicle fires in parking lots attached to buildings or in independent parking lots. In fact, basements or mechanical facilities make it difficult for firefighters or firefighting equipment to enter the parking lot for rescue, making it difficult to rescue the fire and causing damage to other vehicles.

On the other hand, as electric vehicles become more popular, they are often seen in parking lots. However, dealing with fires caused by battery combustion will incur higher rescue costs and risks.

It can be seen from this that a new fire protection mechanism applicable to parking lots must be proposed to detect, respond and isolate the disaster as early as possible, so as to effectively control the disaster and reduce the damage.

In view of this, the embodiment of the present invention provides a fire accident prevention method and fire spread prevention system for parking lots, which can detect possible ignition reactions (for example, fuel volatile substances, combustion temperature, chemical reactions caused by excessive use of batteries, chemical reaction temperature, etc.) at an early stage, and take quick and effective countermeasures to cool down, isolate, isolate and/or extinguish the fire.

The fire accident prevention method for parking lots of the embodiment of the present invention includes (but is not limited to) the following steps: obtaining sensing data. The sensing data is generated by detecting the parking lot. Determining whether the sensing data meets the protection condition. The protection condition is related to the fire event. Based on the judgment result that the protection condition is met, the vehicle is moved to the isolation area. Performing fire extinguishing operations in the isolation area.

The fire spread prevention system of the embodiment of the present invention is applicable to various types of parking lots. The fire spread prevention system includes one or more sensors, a mobile mechanism, a fire extinguishing device and a controller. The sensor is used to obtain sensing data. The mobile mechanism is used to move vehicles. The fire extinguishing device is used to extinguish fires. The controller couples the sensor, the mobile mechanism and the fire extinguishing device. The controller is configured to obtain sensing data, determine whether the sensing data meets the protection condition, and move the vehicle to an isolation area based on the judgment result that the protection condition is met. Fire extinguishing operations are performed in the isolation area. The sensing data is generated by detecting the parking lot. The protection condition is related to the fire event.

Based on the above, the fire accident protection method and fire spread prevention system for parking lots of the embodiment of the present invention provide field detection, respond to fire events and properly cover the vehicles with fire blankets to isolate them to prevent spread, and extinguish the fire in the isolation area. For parking equipment or fields without a platform device, the autonomous mobile vehicle equipped with a fire extinguishing device is controlled to move to the location of the vehicle in the accident, and then the cooling is activated, the fire blanket is covered for isolation, and the cooling is re-injected. In this way, the disaster can be effectively controlled and human and property damage can be reduced.

In order to make the above features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with the accompanying drawings.

10: Fire spread prevention system

11: Sensor

12: Mobile mechanism

121: Car plate

13: Fire extinguishing device

14: Controller

15: Autonomous mobile vehicle

S210~S240: Steps

131: Explosion-proof blanket

132: Guide rod mechanism

122: Carrier

C1: Vehicles

D1, D2: Direction

AC: The vehicle involved in the accident

134: Fire extinguisher

D3~D6, PP: Path

QA: Isolation area

FIG1 is a block diagram of components of a fire spread prevention system according to an embodiment of the present invention.

Figure 2 is a flow chart of a fire accident protection method according to an embodiment of the present invention.

Figures 3A to 3G are schematic diagrams of automatic covering according to an embodiment of the present invention.

Figures 3H to 3M are schematic diagrams of automatic covering according to another embodiment of the present invention.

Figures 4A to 4J are schematic diagrams of application scenarios according to an embodiment of the present invention.

FIG. 1 is a block diagram of components of a fire spread prevention system 10 according to an embodiment of the present invention. Referring to FIG. 1 , the fire spread prevention system 10 includes (but is not limited to) one or more sensors 11, a moving mechanism 12, one or more fire extinguishing devices 13, and a controller 14.

The sensor 11 is used to sense vision (e.g., image, infrared sensing, etc.), sound, vibration (may be spectrum or other forms of expression), electrical characteristics (e.g., current or voltage, etc.), humidity, smoke, chemical gas and/or temperature, but is not limited thereto. For example, an image sensor, a humidity sensor, a smoke sensor or a temperature sensor. In one embodiment, the sensor 11 is used to detect people, things and/or objects in a parking lot and generate sensing data accordingly. That is, the sensing data is generated by detecting the parking lot. The sensing data can be raw data related to intensity (e.g., temperature, humidity or smoke concentration), or it can be converted feature data (e.g., image features, spectrum features or power).

The moving mechanism 12 may be a vehicle-mounted transfer plate, a rotating plate, an elevator or other mechanism for moving a vehicle and/or a vehicle plate 121 for parking a vehicle, or a movable and programmable self-propelled module. The components of the moving mechanism 12 may include power components such as motors, transmission chains, tracks, rollers, cables, telescopic push-pull mechanisms, battery power supply modules, programmable logic controllers (PLCs), single-chip controllers, etc. Alternatively, the components of the moving mechanism 12 may also be various types of mechanical components such as slide rails, turntables, screws, cylinders, power supplies, positioners, and carriers, but are not limited thereto.

The fire extinguishing device 13 can be a fire extinguisher that sprays water, foam, powder or carbon dioxide. The fire extinguishing device 13 can also be a programmable water supply. Alternatively, the fire extinguishing device 13 can be a mechanism that covers a high-temperature resistant explosion-proof blanket. Alternatively, the fire extinguishing device 13 can be a fire water spraying interface fixedly installed in the vehicle compartment, or it can be mounted on a movable vehicle to continuously and target the hot spots that cause disasters (for example, the chassis battery pack) for cooling after covering the fire/explosion-proof blanket.

The controller 14 is coupled to the sensor 11, the mobile mechanism 12 and the fire extinguishing device 13. The controller 14 can be a central processing unit (CPU), a graphic processing unit (GPU), or other programmable general-purpose or special-purpose microprocessor, digital signal processor (DSP), programmable controller, field programmable gate array (FPGA), application-specific integrated circuit (ASIC), neural network accelerator or other similar components or a combination of the above components. In one embodiment, the controller 14 is used to perform all or part of the operations of the fire spread prevention system 10. For example, the controller 14 can control the lifting/translation of the mobile mechanism 12, or control the mobile mechanism 12 to tow the vehicle plate 121.

In one embodiment, the fire spread prevention system 10 further includes an autonomous mobile vehicle 15. The autonomous mobile vehicle 15 is, for example, an autonomous mobile robot (AMR), an automated guided vehicle (AGV), or other programmed mobile robots/vehicles. For example, an autonomous mobile robot is a trackless unmanned transport vehicle that combines positioning and automatic navigation, and can enable a flameout vehicle to have autonomous mobility or a mechanism to prevent disaster spread (to be described in detail in subsequent embodiments). The autonomous mobile vehicle 15 may include a programmable or remotely controlled controller, a power unit (e.g., a motor or engine), a transmission system (e.g., a drive shaft or a transmission shaft), and a drive wheel (e.g., a wheel or a track).

In one embodiment, the autonomous mobile vehicle 15 is equipped with a fire extinguishing device 13.

In the following, the method described in the embodiment of the present invention will be described in conjunction with the various components, modules and devices in the fire spread prevention system 10. The various processes of the method can be adjusted according to the implementation situation, but are not limited to this.

FIG2 is a flow chart of a fire accident protection method according to an embodiment of the present invention. Referring to FIG2, the controller 14 obtains sensing data (step S210). Specifically, the sensing data may come from an internal or external sensor 11. The sensor 11 may detect such things as ambient temperature, smoke, flames or other fire-related phenomena. It is not limited to fixed sensors 11. In some application scenarios, the sensor 11 may be installed on an autonomous mobile vehicle 15, and based on a mobile inspection mechanism, the case area is monitored to avoid detection blind spots.

In one embodiment, the sensor 11 can provide detection results such as images, temperature sensing, smoke detection, and chemical gas detection to detect abnormalities in advance. For example, the sensor 11 detects regional devices or equipment such as vehicles, vehicle panels 121, vehicle compartments, trolleys, lifts, lanes, stairwells, ride areas, entrance and exit doors, fences, and mobile inspection devices.

In one embodiment, the controller 14 can detect abnormal objects, unconventional objects or unconventional shaped objects (e.g., deformed objects) in real time based on sensing data (e.g., images, photoelectricity, gratings). For example, feature matching or neural network image recognition technology is applied. In one embodiment, the controller 14 can also specifically detect factors inside and outside the parked vehicles and the environment that may cause or trigger fires. For example, garbage, user drops and power supply equipment on vehicles, car plates 121, car grids, trolleys, lifts, lanes, stairwells, ride areas, entrances and exits, fences and other locations. In this way, abnormal objects that may cause puncture, ignition, combustion, and affect the operation of equipment can be detected as early as possible.

In one embodiment, the present invention can enhance the abnormal high temperature and fire detection notification at the entrance of the parking lot. For example, the sensing coverage of the sensor 11 is increased, the feedback frequency of the sensor 11 is increased, or the sensitivity of the sensor 11 is increased.

In one embodiment, the arrangement of the sensors can be planned and deployed based on factors such as sensing function, sensing coverage, response speed, and distribution of the detected area. For example, fixed type: suitable for fixed-point sensing, fixed-range area scanning, or larger area monitoring. In one application scenario, the sensor 11 may be deployed at multiple locations in a parking lot. Another example is mobile with a trolley/elevator: if the sensor 11 is installed on a trolley or elevator, an additional anti-vibration mechanism can be provided to reduce mechanical vibration interference or function impact. This feature allows the status of the travel path to be monitored as the facility is in operation. For another example, remote control: if the sensor 11 is installed on the autonomous mobile vehicle 15, the route and target point of the autonomous mobile vehicle 15 can be remotely set.

In one embodiment, the controller 14 can issue a warning based on the sensing data. For example, if the controller 14 detects an alarm event such as high temperature, dense fog, chemical gas, or fire, it can issue an alarm message through a communication transceiver, a speaker, or a display. This warning information can be used by the equipment manager or even to notify the parking lot user to suspend the parking service or pick-up service.

Please refer to FIG. 2 , the controller 14 determines that the sensing data meets the protection condition (step S220). Specifically, the protection condition is related to a fire event. A fire event is related to temperature, smoke, flames and/or battery variations. For example, a temperature higher than 100 degrees, a smoke concentration greater than 15% per foot, high brightness in the image, chemical reactions caused by abnormal battery use (Battery abuse), gas release (Out gassing) and smoke generation (smoke).

Taking battery-powered electric vehicles as an example, the vicious cycle from abnormal chemical reaction of the battery system, gas release, smoke generation to thermal runaway takes about 6 minutes. Therefore, making good use of this golden 6 minutes and taking necessary timely disaster relief measures will have the opportunity to actively eliminate the disaster and then control it to prevent the disaster from expanding and affecting other vehicles.

It should be noted that the content of the protection conditions can still be changed according to actual needs. In addition, the protection conditions may be related to the environmental conditions before or after the fire incident. For example, the signs of fire.

The controller 14 moves the vehicle (in the parking lot) to the isolation area through the moving mechanism 12 according to the judgment result that the protection condition is met (step S230). Specifically, the judgment result that the protection condition is met is a judgment that there is a fire event or a premonition of a fire event, while the judgment result that the protection condition is not met is a judgment that there is no fire event or a premonition of a fire event. The controller 14 can locate the "vehicle in the incident" or the car compartment/car plate. In case of fire incidents or signs of ongoing fire, in order to avoid affecting all vehicles and quickly remove the burning vehicles, the isolation area can be the exit of the parking lot or a space built with high temperature flame retardant materials (for example, aluminum hydroxide, magnesium hydroxide, magnesium oxide, antimony trioxide, or sodium tetraborate). However, the location and construction materials of the isolation area can still be changed according to needs. In this way, rescue personnel can tow the vehicles away from the parking lot or directly provide fire extinguishing operations.

The controller 14 can perform fire extinguishing operations in the isolation area through the fire extinguishing device 13 (step S240). Specifically, the isolation area can be far away from other vehicles and can facilitate personnel or the fire extinguishing device 13 to implement isolation or fire fighting. When the fire vehicle is transferred into the isolation area, the fire extinguishing device 13 can further provide fire extinguishing measures. For example, cooling, spraying foam, injecting/irrigating water, or isolating/reducing air to achieve the fire extinguishing effect.

In one embodiment, a fire event or its precursor occurs in a vehicle. The controller 14 can cover the vehicle with an explosion-proof blanket through the moving mechanism 12. The explosion-proof blanket is a high-strength bulletproof fiber material, which has the characteristics of wear resistance, high temperature resistance and/or waterproofness. A vehicle fire may cause an explosion, and the explosion-proof blanket can effectively protect against shock waves and fragments generated by the explosion.

Figures 3A to 3G are schematic diagrams of automatic covering according to an embodiment of the present invention. Referring to Figure 3A, the moving mechanism 12 includes a platform 122 for placing the vehicle C1 (possibly together with the vehicle plate 121), and the motor provides a driving force to move the platform 122. The platform 122 is provided with an explosion-proof blanket 131 and a guide rod mechanism 132. The explosion-proof blanket 131 is placed in a storage box. The first end of the guide rod of the guide rod mechanism 132 is connected to the explosion-proof blanket 131, and the second end of the guide rod can be rotated or moved by the driving force.

Please refer to Figure 3B, the motor of the guide rod mechanism 132 rotates the second end of the guide rod, causing the first end of the guide rod to move in the direction D1, and the first end of the guide rod stretches the explosion-proof blanket 131.

Please refer to Figure 3C, the first end of the guide rod moves to the highest point. At this time, nearly half of the body of the vehicle C1 is covered by the explosion-proof blanket 131. Then, please refer to Figure 3D, the first end of the guide rod moves in the direction D2, so that the explosion-proof blanket 131 is cross-covered.

Please refer to Figures 3E to 3G in sequence. The first end of the guide rod moves to the front of the vehicle C1, so that the explosion-proof blanket 131 completely covers the vehicle C1 and is tightly attached to the vehicle C1, thereby achieving air isolation.

In one embodiment, before the vehicle is moved, air isolation or air contact reduction and cooling measures (for example, spraying an appropriate amount of carbon dioxide or exhaust) can be implemented to avoid or slow down the deterioration of the accident situation of the vehicle and avoid the spread of ignitable substances.

In one embodiment, the controller 14 can activate the cooling mechanism for the detected incident area (i.e., the area where the fire incident occurred), and cool down the objects (e.g., vehicles or equipment) in the incident area by means of low-temperature spraying through the fire extinguishing device 13. In addition, within a period of time (e.g., 3, 5, 10 or 30 minutes), the controller 14 can continuously monitor the temperature of the incident area through the sensor 11 (e.g., by thermal imaging) to see whether the purpose of cooling has been achieved, or even stabilized at a safe temperature.

In one embodiment, if the temperature drops to a safe temperature range, the controller 14 may activate further disaster prevention mechanisms (e.g., cooling, isolation, flooding and/or isolation).

In one embodiment, the controller 14 can spray a large amount of low-temperature foam on the bottom and around the body of the vehicle through the fire extinguishing device 13 to continuously cool the vehicle.

In one embodiment, the controller 14 or the parking lot fire control equipment can cut off the main power supply of the parking lot or mechanical parking equipment and activate the backup power supply. This backup power supply provides power for the vehicle moving operation. For example, it provides power to the sensor 11, the moving mechanism 12 and the fire extinguishing device 13. In this way, the completion of the moving operation and the fire extinguishing operation can be ensured.

In one embodiment, the present invention also provides a corresponding solution for a place where the vehicle in the accident cannot be moved (e.g., a flat parking lot, a mechanical parking device without a platform, a simple lifting device, etc.). The autonomous mobile vehicle 15 can be equipped with a fire extinguishing device 13. In response to a fire event or its prior signs occurring in a vehicle, the controller 14 can determine a driving path for the autonomous mobile vehicle 15 to the current parking space of the vehicle. For example, the plane/floor layout diagram of the parking lot is referenced, and the fastest path or the path where no vehicle is traveling is found. The controller 14 can control the autonomous mobile vehicle 15 to travel according to the driving path. When the autonomous mobile vehicle 15 reaches the vicinity of the current compartment of the vehicle (for example, the lane or empty area near the body/tail), the controller 14 can control the fire extinguishing device 13 to extinguish the fire of the vehicle. In this way, disaster prevention and protection procedures such as cooling, isolation/isolation-air contact and/or continuous cooling can be started at the location of the vehicle. If the facility site has an independent isolation space (for example, a caisson parking device), the controller 14 can further cancel the fire extinguishing and cooling measures.

For example, Figures 3H to 3M are schematic diagrams of automatic covering according to another embodiment of the present invention. Please refer to Figure 3H first, the autonomous mobile vehicle 15 equipped with a fire extinguishing device 13 (for example, an explosion-proof/fire blanket, a fire extinguisher and/or a stretch rod) moves along the travel path PP to the rear lane of the incident vehicle AC where the fire incident occurred.

Please refer to Figure 3I, the autonomous mobile vehicle 15 is provided with an explosion-proof blanket 131, a guide rod mechanism (or a telescopic, push-pull rod module) 132 and a fire extinguisher 134. The explosion-proof blanket 131 is placed in a storage box. The first end of the guide rod of the guide rod mechanism 132 is connected to the explosion-proof blanket 131, and the second end of the guide rod can be rotated or moved by a driving force. The initial position of the first end of the guide rod is approximately 220 cm from the ground (but not limited to this).

Please refer to Figures 3J to 3M in sequence. The motor of the guide rod mechanism 132 rotates the second end of the guide rod, so that the first end of the guide rod moves toward paths D3, D4, D5, and D6 in sequence, and the first end of the guide rod stretches the explosion-proof blanket 131. The explosion-proof blanket 131 is covered from high to low so that it will not get stuck. Finally, the explosion-proof blanket 131 completely covers the vehicle C1 and is tightly attached to the vehicle C1, thereby achieving air isolation. The stretching frame of the guide rod mechanism 132 moves along the descending trajectory (such as the dotted path D6 in Figure 3M), and one end of the hydrophilic explosion-proof blanket 131 is attached to the ground to achieve an isolation effect.

In addition, if the vehicle C1 is located in an independent isolation space, the fire extinguisher 134 can further extinguish the fire in the vehicle C1.

4A to 4J are schematic diagrams of application scenarios according to an embodiment of the present invention. Referring to FIG. 4A and FIG. 4B , the mobile mechanism 12 transfers the burning vehicle C1 to the platform 122. Referring to FIG. 4C and FIG. 4D , the mobile mechanism 12 covers the vehicle C1 with the explosion-proof blanket 131 , and the details thereof can be referred to FIG. 3A to FIG. 3G . Referring to FIG. 4C to FIG. 4G , the mobile mechanism 12 transfers the platform 122 together with the vehicle C1 to the isolation area QA. The isolation area QA and the parking position of the vehicle are located at different levels. For example, the machine pit at the bottom of the facility increases the space for accommodating vehicles. In addition, when the vehicle C1 is pushed by the moving mechanism 12 to leave the platform 122 and the vehicle C1 moves horizontally, the explosion-proof blanket 131 can also be separated from the platform 122 that moves the vehicle C1. When the guide rod mechanism 132 is separated from the platform 122, the explosion-proof blanket 131 cannot be lifted or separated from the vehicle body where the accident occurred, so that the explosion-proof blanket 131 continues to cover the vehicle C1 to prevent the burning object from falling off.

Please refer to Figure 4H, the carrier 122 leaves the isolation area QA and moves to a safe position to wait. Please refer to Figures 4I and 4J, in response to the carrier 122 leaving the isolation area QA (for example, reaching a safe position or being 50 meters away from the isolation area), the controller 14 can inject water into the isolation area QA (i.e., extinguish the fire) through the fire extinguishing device 13 (for example, a fire hydrant that can control the switch). Alternatively, firefighting water, firefighting sand or high-temperature resistant condensate is poured into the isolation area QA.

For sites without platforms for transporting vehicles, the present invention is implemented in accordance with a movable fire-fighting module equipped with the aforementioned cooling fire-fighting equipment, high-temperature fire-proof/explosion-proof blankets, and retractable push-pull support mechanisms. When a fire is detected, the controller 14 activates the movable module (i.e., an autonomous mobile vehicle 15 equipped with a fire-fighting device 13), quickly reaches the location of the vehicle involved, and then performs the same cooling, fire-fighting, covering with fire-proof/explosion-proof blankets, and further cooling, so as to achieve a disaster prevention and protection effect of quickly slowing down the spread of the disaster.

The embodiments of the present invention can be applied to flat parking spaces, box-type circulation, simple mechanical parking spaces, etc.

For caisson-type mechanical parking equipment, after completing the above-mentioned disaster prevention and protection measures, the caisson space can be used as an isolation space for fire water injection.

In summary, in the fire accident prevention method and fire spread prevention system for parking lots of the present invention, the parking lot environment is sensed, and vehicles are moved in response to fire events to extinguish the fire. In this way, the disaster situation can be quickly controlled. In addition, mechanisms such as cooling and air isolation are provided to improve the efficiency of fire extinguishing.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the attached patent application.

S210~S240: Steps

Claims (9)

A method for preventing a parking lot from fire accidents comprises: obtaining a sensing data, wherein the sensing data is generated by detecting a parking lot; judging that the sensing data meets a protection condition, wherein the protection condition is related to a fire event; and covering a vehicle with an explosion-proof blanket according to the judgment result that the protection condition is met, and moving the vehicle to an isolation area, wherein the explosion-proof blanket is provided by a first guide rod mechanism. The first end and the second end of the guide rod mechanism are stretched, and when the first end of the guide rod mechanism stretches the explosion-proof blanket to a first direction to a highest point, the second end of the guide rod mechanism is driven to rotate or move so that the first end stretches the explosion-proof blanket to a second direction; the explosion-proof blanket is separated from a carrier for moving the vehicle; and in response to the carrier leaving the isolation area, a fire extinguishing operation is performed in the isolation area, wherein the fire extinguishing operation is water injection. A method for preventing fire accidents in a parking lot as described in claim 1, wherein the fire event or its prior signs occur in the vehicle. The fire accident protection method for a parking lot as described in claim 1 further includes: cutting off a main power supply and activating a backup power supply, wherein the backup power supply provides power for the vehicle moving operation. A method for preventing fire accidents in parking lots as described in claim 1, wherein the protection condition is related to at least one of a temperature, a smoke, a flame, and a battery variation. A fire spread prevention system is applicable to a parking lot. The fire spread prevention system includes: at least one sensor for obtaining sensing data; a mobile mechanism for moving a vehicle; a fire extinguishing device for extinguishing a fire; and a controller coupled to the at least one sensor, the mobile mechanism and the fire extinguishing device and configured to: obtain the sensing data, wherein the sensing data is generated by detecting the parking lot; determine whether the sensing data meets a protection condition, wherein the protection condition is related to a fire event; and according to the determination result that the sensing data meets the protection condition, move a fire extinguishing device through the mobile mechanism. The explosion-proof blanket covers the vehicle, and the vehicle is moved to an isolation zone through the moving mechanism, wherein the explosion-proof blanket is stretched by the first end and the second end of a guide rod mechanism, and when the first end of the guide rod mechanism stretches the explosion-proof blanket to a first direction to a highest point, the second end of the guide rod mechanism is driven to rotate or move so that the first end stretches the explosion-proof blanket to a second direction; the explosion-proof blanket is separated from a carrier for moving the vehicle through the moving mechanism; and in response to the carrier leaving the isolation zone, a fire extinguishing operation is performed in the isolation zone through the fire extinguishing device, wherein the fire extinguishing operation is water injection. A fire spread prevention system as described in claim 5, wherein the fire event or its prior signs occur in the vehicle. A fire spread prevention system as described in claim 5, wherein the controller is further used to: cut off a main power supply and activate a backup power supply, wherein the backup power supply provides power for the vehicle's moving operation. The fire spread prevention system as described in claim 5 further includes: an autonomous mobile vehicle equipped with the fire extinguishing device, wherein the fire event or its prior signs occur in the vehicle, and the controller is further used to: determine a driving path for moving to the vehicle; control the autonomous mobile vehicle to move according to the driving path; and control the fire extinguishing device to perform the fire extinguishing operation on the vehicle. A fire spread prevention system as described in claim 5, wherein the protection condition is related to at least one of a temperature, a smoke, a flame, and a battery variation.

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